(-x+4)(1=3X)

Solution for (-x+4)(1=3X) equation:

(-x+4)(1=3x)

We move all terms to the left:

(-x+4)(1-(3x))=0

We add all the numbers together, and all the variables

(-1x+4)(-3x+1)=0

We multiply parentheses ..

(+3x^2-1x-12x+4)=0

We get rid of parentheses

3x^2-1x-12x+4=0

We add all the numbers together, and all the variables

3x^2-13x+4=0

a = 3; b = -13; c = +4;
Δ = b2-4ac
Δ = -132-4·3·4
Δ = 121
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{121}=11$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-13)-11}{2*3}=\frac{2}{6}
=1/3
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-13)+11}{2*3}=\frac{24}{6}
=4
$